I was referring to the end clamps visible in your first photo. Yes it's odd that some Mfg. design these clamps this way. You could cut the excess threads off if it makes you feel better. I don't suppose you had a good look at this hardware before installation?

The mid clamps bolts are upside down, the wrong hardware may have been ordered. There are often dozens of model numbers for a clamp and it pretty much has to be exact for a panel to clamp and look proper. Nice panels

Thank you very much for your help. Indeed I didn’t take a look at the hardware and was more focused on the solar panel specifications and the overall design . What I’m trying to confirm is whatever the installer used wrong clamps or not and if one here had experience with other clamps for these panels. So I could go back to the installer.

Wrong,as the mid and end clamps are not the same pattern. The bolt is up on one and the nut is up on the other. This is wrong and the installer should correct it. I do not use that make of clamp for ground mounting. Looks hoaky not to mention the plumbing vent shadow...

Most racking hardware is proprietary and not necessarily interchangeable. This isn't the first time I've seen this design. Depending on the size and location of your array, it might be more trouble than it's worth to cut/ swap these clamps.